Shear-trimmer



J. M. HILLIARD.

SHEAR TRIMMER.

APPLICATION FILED JUNE 11. 1919.

Patented Jan. 20, 1920.

W I russs 1 Cla ming rinrrnn STATES Parana OFFICE.

JOHN M. HILLIARI), OF \VACO, TEXAS, ASSIGNOR OF ONE-HALF 'IO C. W. LOTT, 0F WACO, TEXAS.

SHEAR-TRIMMER.

Specification of Letters Patent.

Patented Jan. 20, 1920.

Application filed June 11, 1919. Serial No. 303,386.

To all whom it may concern:

Be it known that 1, JOHN M. HILLTARD, a citizen of the United States, residing at lVaco, in the county of McLennan, and State. of Texas, have invented certain new and useful Improvements in Shear-Trimmers, which the following is a specification.

This invention relates to certain new and useful improvements in shear trimmers and pertains more especially to a device employed for the trimming of wall paper.

The. primary object of the invention is to provide a trimmer of this type which can be easily and quickly operated and which has positive means for guiding the cutting blade so as to assure of the latter effecting a clean and certain cut.

The invention further aims to provide a trimmer which is of simple and economical construction, and to further provide means for guarding the blade when the latter is not being used.

Further and other objects will be later set forth and manifested in the course of the following description.

In the drawings:

Figure 1, is a side elevation of the invention;

Fig. 2, is a detail view, in fragment, showing th blade and related parts in section,

Fig. 3, is a detail view in front elevation of the cutting blade, and

Fig. 4, is a top plan view, partly broken away.

In proceeding in accordance with the invention, a base board 1, is employed and is provided with a metal edge blade or platelike strip 2, superimposed upon the upper fac of the same, so as to have its outer side edge lie flush with the outer side edge of the board, as depicted in Fig. 2, of the drawings.

Metal strips 3, are employed to face the ends of the board and are rigidly secured thereto. The cutter consists of a blade 4, having end arms 5 pivoted to the ends of the base by means of pins 6, the cutter be ing thus of substantially U-formation. The upper edge of the cutter bar has a forwardly projecting flange 7, to provide a convenient finger grip to allow of easy manipulation of the cutter.

A blade 8, having a beveled top edge as shown in Fig. 2, is disposed along the front of the base in spaced relation thereto, the

L-sha'ped brackets 10, are employed to rigidly mount the blade and its arms 9, the bases of the brackets engaging beneath the base 1, and blade 8, and also beneath the arms 9, being suitably secured to the respective parts named by means of rivets 11, while pins or screws 12, may be employed to secure the rigidly disposed parts to the base 1.

In operation, the paper or other material to be cut is laid on top of the base blade 2, and the cutter is then lowered, so as to effect a shearing action between the blades 4 and 2. At the end of the shearing action, the blades will occupy the position of Fig. 2, so that the several blades will be protected against contactwith foreign objects, namely the blade 4 will be protected by the blad 8, and the latter in turn will be protected by the flange 7 of the blade 4. Downward movement of the blade 4, will be restricted by the outer terminals thereof engaging the bases of the brackets 10.

The under face of the flange 7, will also engage the blade 8, and restrict downward movement of the cutter 4. The cutter bar 4, it will be seen is thus positively guided in its movements: not only by the arms 5, thereof but by the blade 8, which engages the blade 4. A true and accurate cut thus results.

For th purpose of not only balancing the cutter bar or blade 4, but also to assist the downward movement, weights 20, are secured removably by screws or fastenings 21, to the ends of the flange 7. By having the weights removable, the same may be changed according to the thickness of the paper being cut, 6., heavier weights being used for heavy paper, and vice versa. In this man ner the cutter bar 4, is given a uniform downward or shearing movement. If desired the parts 3, 3 and 5, 5 may be beveled so as to shear.

What is claimed is:

1. In a shear trimmer, a base, end metal face plates on the base, a blade arranged in front of the base in spaced relation thereto and having'right angular ends disposed in spaced relation to the respective end face plates of the base, substantially L-shape brackets secured to the bottom of the base and receiving th lower edges of the blade and the arms thereof, and a movable cutter embodying a blade receivable between the front of the base and the first named blade and having end arms pivoted to the base and movable in the space between the face plates of the base and the ends of the first named blade, said blade of the movable cutter having a substantially right angular flange which overlies the first named blade.

2. In a shear trimmer, a base, a substantially U-shaped blade rigidly affixed to the base with space between the front and ends of the base and the front and ends respectively of the blade, 'a substantially U-shaped blade pivoted to the base and movable in said space between the rigid blade and the base so as to have its ends guided by the ends of the base and rigid blade, and a flange borne by the pivoted blade and overlying the cutting edge of the rigid blade.

3. In a shear trimmer, a base, a substantially U-shaped blade rigidly affixed to the base with space between the front and ends of the base and the front and ends respectively of the blade, a substantially U-shaped blade pivoted to the base and movable in said space between the rigid blade and the baseso as to have its ends guided by the ends of the base and rigid blade, and means to operate the pivoted blade.

l. In a shear trimmer, a base, a U-shaped cutter receiving the base in the space between the arms of the U and pivoted to the base so that the ends of the latter will engage and guide. the blade during the movements of the latter,and a flange extending outwardly from and in front of the cutter to provide a finger grip for operating the cutter.

5. In a shear trimmer, a base, a blade on top of th base, a U-shaped guard connected to the base in spaced relation thereto, a U-shaped cutter bar pivoted to the base and operating in the space between the guard and the base, so as to have its ends guided by the ends of the base and guard, said cutter bar having a finger gripping flange extending outwardly from its top and overlying the front of the guard, and weights removably secured to the ends'of the flange and disposed in front of the cutter bar.

In testimony whereof I afiix my signature.

JOHN M. HILLIARD. 

